CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue	$ 44,682	$ 55,661
Costs of sales:
Contract	34,918	43,814
Cost of sales	34,918	43,814
Gross margin	9,764	11,847
Operating expenses:
Selling, general and administrative	8,564	8,600
Research and development	3,060	2,868
Amortization of identifiable intangible assets	241	241
Operating expenses	11,865	11,709
Operating (loss) income	(2,101)	138
Other (expense) income, net	(430)	49
Interest expense, net	(146)	(41)
(Loss) income before provision for income taxes	(2,677)	146
Provision for income taxes	(52)	(78)
Net (loss) income	$ (2,729)	$ 68
Basic Earnings per Share:
Net (loss) income (in dollars per share)	$ (0.17)	$ 0.00
Diluted Earnings per Share:
Net (loss) income (in dollars per share)	$ (0.17)	$ 0.00
Weighted average shares outstanding
Basic (in shares)	16,044	15,948
Diluted (in shares)	16,044	16,286
Product [Member]
Revenue	$ 15,517	$ 26,324
Costs of sales:
Contract	11,241	19,440
Cost of sales	11,241	19,440
Service [Member]
Revenue	14,043	13,196
Costs of sales:
Contract	10,027	9,547
Cost of sales	10,027	9,547
Contract [Member]
Revenue	15,122	16,141
Costs of sales:
Contract	13,650	14,827
Cost of sales	$ 13,650	$ 14,827